Talk:How can I use conditional execution (If ... EndIf equivalent)?
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If you include "LogicLib.nsh" you can use If like this:
${If} $0 == "OK"
...
${Else}
...
${EndIf}
and many many more formats - see "LogicLib.nsh" in NSIS/include directory and "LogicLib.nsi" in NSIS/examples directory.
